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At least 73 records · Page 4Linked to original sources
PubMed2002

Frictional torque and wear of retrieved hip prostheses: a comparison between alumina/PE and Co-Cr/PE prostheses.

Frictional torque and wear were measured in 67 retrieved cups with internal diameters of 32 mm. Thirty cups were combined with alumina heads and 37 were combined with metal heads. A lower prevalence of cup loosening was observed in alumina-polyethylene implants than in metal-polyethylene implants. No relation between frictional torque and stability of implants was detected for either type, whereas retrieved cups of alumina-polyethylene implants showed lower frictional torque than those of metal-polyethylene implants. Less wear was observed in the cups of alumina-polyethylene implants (0.13 mm/y) than in those of metal-polyethylene implants (0.19 mm/y). Less wear was observed in cups without loosening than in those with loosening in both types. These results suggest that wear has a greater influence on the stability of cups than frictional torque.

Adult↗
PubMed1999

Impact on the quality of remaining life of treatment with self-expandable metal prostheses in patients with inoperable esophago-cardial cancer. Results of a study of 107 consecutive patients treated with Ultraflex-type prostheses.

BACKGROUND: Self-expanding metal stents are a new alternative for palliation of esophagocardial malignancies. We evaluated the impact of these stents on the quality of remaining life in patients affected by inoperable esophago-cardial cancer. METHODS: Between September 1992 and September 1997, 102 patients underwent implantation of self expanding metal stents for palliation of dysphagia due to esophagene or cardial cancer (76 patients), or for locally recurrent carcinoma after surgery (14 patients), lasertherapy (13 patients) or radiotherapy (5 patients). Stents were implanted under radiological and endoscopic control in patients under mild sedation. RESULTS: Successful stent implantation was achieved in 102/107 patients (95.3%). Early complications were observed in 4.9% and per-operative mortality was 1.96%. After stent implantation the dysphagia score improved from 3.0, on average, to 0.5, on average. Late complications were evidenced in 25.5%. Weight gain was evidenced in 24.5% and the performance status improved in 14.3%. The mean survival time was 6.9 months. CONCLUSIONS: Self expanding metal stents are an effective alternative for palliation of malignant dysphagia due to esophageal and cardial cancers.

Journal Article↗
PubMed1982

[Treatment of inflammatory hip disease in rheumatoid arthritis with cemented total prostheses. Apropos of 62 total hip prostheses, of which 38 were followed for more than 3 years].

The authors have operated on 62 hips in 43 patients. Thirty-eight were followed for more than three years. Out of 62 cases there were 2 early deaths, 2 instances of pulmonary embolus and 1 of sepsis. Five different types of prosthesis were used. On 11 occasions a border appeared around the cement of the femoral component and in three of these loosening was demonstrated. The number of these appeared to be higher than after total replacement for other etiologies and seemed to be aggravated by technical errors, such as varus positioning and lack of cement. In most cases a remarkable functional improvement was obtained but progressively secondary worsening of walking ability was seen due to involvement of other joints. It is concluded that special precautions should be observed in such cases and that other joints should be replaced earlier when necessary.

Adult↗